All ships made their own individual sounds during a dive, though no one was sure precisely why. Grimm’s midshipman’s tour had been aboard a destroyer named the Speck. It had howled like a damned soul when it stooped upon a victim. Other ships wailed like enormous steam whistles. Still others took up a regular pounding rhythm, like the beating of some vast drum. Once, Grimm had been aboard the light cruiser Furious, which literally boomed out enormous snarls as it charged to combat. But his ship outdid them all. When Predator sailed into war, she sang.

